Enter the efficiency (%), the height (m), and the flow rate  (m^3/s) into the calculator to determine the Hydro Power.

## Hydro Power Formula

The following formula is used to calculate the Hydro Power.

Ph = n*p*g*h*Q
• Where Ph is the Hydro Power (watts)
• n is the efficiency (%)
• h is the height (m)
• Q is the flow rate  (m^3/s)
• p is the density of the water (997 kg/m^3)
• g is the acceleration due to gravity (9.81m/s^2)

## How to Calculate Hydro Power?

The following example problems outline how to calculate Hydro Power.

Example Problem #1

1. First, determine the efficiency (%). In this example, the efficiency (%) is determined to be 1.3.
2. Next, determine the height (m). For this problem, the height (m) is measured to be 5.4 .
3. Next, determine the flow rate  (m^3/s). In this case, the flow rate  (m^3/s) is found to be 1.6.
4. Finally, calculate the Hydro Power using the formula above:

Ph = n*p*g*h*Q

Inserting the values from above and solving yields:

Ph = 1.3*997*9.81*5.4*1.6 = 109,855.36 (watts)

Example Problem #2

Using the same method as above, determine the variables required by the formula. For this example problem, these are:

efficiency (%) = 8.4

height (m) = 5.2

flow rate  (m^3/s) = 9.5

Enter these given values into the calculator or above yields:

Ph = 8.4*997*9.81*5.2*9.5 = 4,058,545.32 (watts)